Nocturnal airway patency appliance for preventing occlusion of the oral airway of sleep apnea patients



FIG. 1 is a top plan view of a nocturnal airway patency appliance for preventing occlusion of the oral airway of sleep apnea patients, showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a side elevational view thereof, the opposite side being identical thereto; and

FIG. 5 is a rear elevational view thereof. 

The ornamental design for a nocturnal airway patency appliance for preventing occlusion of the oral airway of sleep apnea patients, as shown and described. 